第7题：Arguments参数的理解

[kujian]

function test(num1,num2){
    console.log(num1,arguments[0]);
    arguments[0] = 2;
    console.log(num1,arguments[0]);
    num1 = 10;
    console.log(num1,arguments[0]);
}
test(1);

严格模式

function test(num1,num2){
    'use strict';
    console.log(num1,arguments[0]);
    arguments[0] = 2;
    console.log(num1,arguments[0]);
    num1 = 10;
    console.log(num1,arguments[0]);
}
test(1);

无值情况下

function test(num1,num2){
    console.log(num1,arguments[0]);
    num1 = 10;
    arguments[0] = 5;
    console.log(num1,arguments[0]);
}
test();

答案参考：https://www.cnblogs.com/xiaohuochai/p/5706289.html